PartsTable
Technical Data Sheet
Download PDF

IN4638 — PLUG,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

IN4638: PLUG,PIPE.

The PLUG,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, body_type: SOLID, head_type: SOLID, drive_end_style: HEXAGON, connection_style: PLAIN, special_features: 0.094 INCHES WIDE BY 0.063 INCHES DEEP UNDERCUT BETWEEN HEAD AND THREAD IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-202-6380, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
IN4638
NSN: 4730-00-202-6380
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0KDP7 — KIDDE-FENWAL, LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
body_typeSOLID
head_typeSOLID
drive_end_styleHEXAGON
connection_stylePLAIN
special_features0.094 INCHES WIDE BY 0.063 INCHES DEEP UNDERCUT BETWEEN HEAD AND THREAD IN
thread_directionRIGHT-HAND EXTERNAL
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.250 INCHES EXTERNAL IN
thread_series_designatorNPT EXTERNAL
nominal_pipe_size_for_which_designed0.250 INCHES IN
NSN4730-00-202-6380
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: IN4638 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD TYPE: SOLID
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.250 INCHES IN
•
CONNECTION STYLE: PLAIN
•
DRIVE END STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
NOMINAL THREAD SIZE: 0.250 INCHES EXTERNAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
HEAD TYPESOLID
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.250 INCHES IN
CONNECTION STYLEPLAIN
DRIVE END STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL THREAD SIZE0.250 INCHES EXTERNAL IN
SPECIAL FEATURES0.094 INCHES WIDE BY 0.063 INCHES DEEP UNDERCUT BETWEEN HEAD AND THREAD IN
SURFACE TREATMENTPASSIVATE OVERALL
BODY TYPESOLID
MATERIALSTEEL CORROSION RESISTING OVERALL
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 4
195148A1Reference document
Same NSN cross-reference
Reference document — Secondary reference
H7103113APC23Reference document
Same NSN cross-reference
Reference document — Secondary reference
H7103112APC23Reference document
Same NSN cross-reference
Reference document — Secondary reference
83712S4105-980780Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy IN4638?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is IN4638?
IN4638 is a PLUG,PIPE.
What parts can replace IN4638?
There are 4 known substitutes for IN4638: 195148A1, H7103113APC23, H7103112APC23 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for IN4638?
IN4638 is cataloged in the U.S. Government catalog under NSN 4730-00-202-6380. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — IN4638

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.